Finding the Fourth Proportional to 10,978.76, 15,153.12 and 7,580.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.76 : 15,153.12 = 7,580.52 : x
2. Step 2: Convert to fraction form
   10,978.76/15,153.12 = 7,580.52/x
3. Step 3: Cross multiply
   10,978.76x = 15,153.12 × 7,580.52
4. Step 4: Simplify right side
   10,978.76x = 114,868,529.22
5. Step 5: Solve for x
   x = 114,868,529.22/10,978.76
6. Step 6: Final answer
   x = 10,462.80